import logging
import redis


class Config(object):
    SQLALCHEMY_DATABASE_URI = "mysql://root:mysql@127.0.0.1:3306/information"
    SQLALCHEMY_TRACK_MODIFICATIONS = False
    SQLALCHEMY_COMMIT_ON_TEARDOWN = True
    REDIS_HOST = "127.0.0.1"
    REDIS_PORT = 6379

    SECRET_KEY = "EjpNVSNQTyGi1VvWECj9TvC/+kq3oujee2kTfQUs8yCM6xX9Yjq52v54g+HVoknA"
    # flask_session的配置信息
    SESSION_TYPE = "redis"  # 指定 session 保存到 redis 中
    SESSION_USE_SIGNER = True  # 让 cookie 中的 session_id 被加密签名处理
    SESSION_REDIS = redis.StrictRedis(host=REDIS_HOST, port=REDIS_PORT)  # 使用 redis 的实例
    PERMANENT_SESSION_LIFETIME = 86400  # session 的有效期，单位是秒

    LOG_LEVEL = logging.DEBUG

class Development(Config):
    # 开发环境
    DEBUG = True


class Production(Config):
    # 生产环境
    DEBUG = False
    LOG_LEVEL = logging.WARNING


class Testing(Config):
    # 测试环境
    DEBUG = True
    # c错误代码追踪
    Testing = True


config ={'development':Development,
         'production':Production,
         'testing':Testing}